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Java Generics and Collections Maurice Naftalin Maurice, Philip Wadler
Publisher: O'Reilly Media

As far as my understanding goes the purpose of Generics in Java is to avoid ClassCastExceptions at runtime and also minimize the crap casts when we get objects from collections. Generics in Java is one of those features where almost everyone uses but very people, including myself, really understand. Java Generic's wildcards is a mechanism in Java Generics aimed at making it possible to cast a collection of a certain class, e.g A, to a collection of a subclass or superclass of A. Generics are possibly the most talked about feature of Java 5 and Collections is the most powerful API. Java Generics and Covariance/Contravariance. I have a method: public List sortStuff(List toSort) { java.util.Collections.sort(toSort); return toSort; } This produces a. This is a crux of all my readings studies and analysis. Code designers will be using generics to make code more flexible in more than just collections. I obtained this book recently to get up to speed with generics and also to gain a fuller knowledge of the capabilities of the Java Collection framework. Suppose you have Java classes The answer to this riddle is that Java is designed to work with all kinds of generic classes, not just those which are collection-like. I don't claim ownership of this content. Overriding hashCode() and equals(). This comprehensive guide shows you how to master the most importantchanges to Java since it was first released. GIST NOTES 7 - Java Generics and Collections [DISCLAIMER: This is solely for non-commercial use. The way generics change collections is not the end of the story.